body.z4f4c9body {
    margin: 0;
    font-family: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif;
    background: linear-gradient(135deg, #e0e7ff 0%, #f8fafc 100%);
    color: #222;
}

.z4f4c9navbar {
    background: #3b82f6;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.08);
    padding: 0.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}
.z4f4c9navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
}
.z4f4c9navbar-title {
    color: #fff;
    font-size: 1.6rem;
    font-weight: bold;
    letter-spacing: 2px;
}

.z4f4c9navbar-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 2rem;
    align-items: center;
    margin-left: auto;
}
.z4f4c9navbar-menu li {
    display: inline-block;
}
.z4f4c9navbar-link {
    color: #fff;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    padding: 0.3rem 0.8rem;
    border-radius: 1.2rem;
    transition: background 0.2s, color 0.2s;
    display: inline-block;
}
.z4f4c9navbar-link:hover,
.z4f4c9navbar-link:focus {
    background: #2563eb;
    color: #fff;
}
@media (max-width: 900px) {
    .z4f4c9navbar-menu {
        gap: 0.5rem;
    }
    .z4f4c9navbar-link {
        font-size: 0.95rem;
        padding: 0.3rem 0.5rem;
    }
}
@media (max-width: 700px) {
    .z4f4c9navbar-container {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }
    .z4f4c9navbar-title {
        margin-bottom: 0.5rem;
        padding-left: 0.5rem;
    }
    .z4f4c9navbar-menu {
        flex-direction: column;
        width: 100%;
        gap: 0.2rem;
        margin-left: 0;
        margin-top: 0.5rem;
        align-items: stretch;
    }
    .z4f4c9navbar-link {
        width: 100%;
        text-align: left;
        border-radius: 0.6rem;
        padding-left: 1rem;
        box-sizing: border-box;
    }
}

.z4f4c9hero {
    background: linear-gradient(120deg, #60a5fa 0%, #818cf8 100%);
    color: #fff;
    padding: 3rem 1.5rem 2rem 1.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.z4f4c9hero::before {
    content: '';
    position: absolute;
    left: -60px;
    top: 20px;
    width: 120px;
    height: 120px;
    background: rgba(255,255,255,0.12);
    border-radius: 50%;
    z-index: 0;
}
.z4f4c9hero-content {
    position: relative;
    z-index: 1;
}
.z4f4c9hero-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    letter-spacing: 1px;
}
.z4f4c9hero-desc {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}
.z4f4c9hero-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
}
.z4f4c9btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 2rem;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.08);
    cursor: pointer;
}
.z4f4c9btn-primary {
    background: #fff;
    color: #3b82f6;
    border: none;
}
.z4f4c9btn-primary:hover {
    background: #dbeafe;
}
.z4f4c9btn-secondary {
    background: transparent;
    color: #fff;
    border: 1.5px solid #fff;
}
.z4f4c9btn-secondary:hover {
    background: #2563eb;
    color: #fff;
}
.z4f4c9btn-download {
    background: #3b82f6;
    color: #fff;
    border: none;
    margin-top: 1rem;
}
.z4f4c9btn-download:hover {
    background: #2563eb;
}

.z4f4c9main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}
.z4f4c9section {
    margin-bottom: 3rem;
    background: #fff;
    border-radius: 1.2rem;
    box-shadow: 0 2px 16px rgba(59, 130, 246, 0.06);
    padding: 2rem 1.5rem;
}
.z4f4c9section-title {
    font-size: 2rem;
    font-weight: 600;
    color: #3b82f6;
    margin-bottom: 1.5rem;
    text-align: center;
}

/* 下载区 */
.z4f4c9download-list {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
}
.z4f4c9download-item {
    flex: 1 1 220px;
    max-width: 320px;
    background: linear-gradient(120deg, #f1f5f9 0%, #e0e7ff 100%);
    border-radius: 1rem;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.06);
    padding: 1.5rem 1rem;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}
.z4f4c9download-item:hover {
    transform: translateY(-6px) scale(1.03);
    box-shadow: 0 6px 24px rgba(59, 130, 246, 0.12);
}
.z4f4c9download-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 1rem auto;
    background-size: contain;
    background-repeat: no-repeat;
}
.z4f4c9android {
    background-image: url('data:image/svg+xml;utf8,<svg width="48" height="48" viewBox="0 0 48 48" fill="none" xmlns="http://www.w3.org/2000/svg"><rect width="48" height="48" rx="24" fill="%233b82f6"/><path d="M16 36V28M32 36V28M24 36V28M12 24H36M16 20V16C16 13.7909 17.7909 12 20 12H28C30.2091 12 32 13.7909 32 16V20" stroke="white" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/></svg>');
}
.z4f4c9ios {
    background-image: url('data:image/svg+xml;utf8,<svg width="48" height="48" viewBox="0 0 48 48" fill="none" xmlns="http://www.w3.org/2000/svg"><rect width="48" height="48" rx="24" fill="%23818cf8"/><path d="M32 32C32 34.2091 30.2091 36 28 36H20C17.7909 36 16 34.2091 16 32V16C16 13.7909 17.7909 12 20 12H28C30.2091 12 32 13.7909 32 16V32Z" stroke="white" stroke-width="2"/><circle cx="24" cy="20" r="2" fill="white"/></svg>');
}
.z4f4c9pc {
    background-image: url('data:image/svg+xml;utf8,<svg width="48" height="48" viewBox="0 0 48 48" fill="none" xmlns="http://www.w3.org/2000/svg"><rect width="48" height="48" rx="24" fill="%23f59e42"/><rect x="14" y="16" width="20" height="14" rx="2" stroke="white" stroke-width="2"/><rect x="20" y="32" width="8" height="2" rx="1" fill="white"/></svg>');
}

/* 优势区 */
.z4f4c9advantage-list {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
}
.z4f4c9advantage-item {
    flex: 1 1 200px;
    max-width: 260px;
    background: linear-gradient(120deg, #e0e7ff 0%, #f1f5f9 100%);
    border-radius: 1rem;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.06);
    padding: 1.2rem 1rem;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}
.z4f4c9advantage-item:hover {
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 6px 24px rgba(59, 130, 246, 0.10);
}
.z4f4c9advantage-icon {
    width: 40px;
    height: 40px;
    margin: 0 auto 1rem auto;
    background-size: contain;
    background-repeat: no-repeat;
}
.z4f4c9icon-safe {
    background-image: url('data:image/svg+xml;utf8,<svg width="40" height="40" viewBox="0 0 40 40" fill="none" xmlns="http://www.w3.org/2000/svg"><rect width="40" height="40" rx="20" fill="%233b82f6"/><path d="M20 12C16.6863 12 14 14.6863 14 18V22C14 25.3137 16.6863 28 20 28C23.3137 28 26 25.3137 26 22V18C26 14.6863 23.3137 12 20 12Z" stroke="white" stroke-width="2"/><path d="M20 20V24" stroke="white" stroke-width="2" stroke-linecap="round"/></svg>');
}
.z4f4c9icon-fast {
    background-image: url('data:image/svg+xml;utf8,<svg width="40" height="40" viewBox="0 0 40 40" fill="none" xmlns="http://www.w3.org/2000/svg"><rect width="40" height="40" rx="20" fill="%23818cf8"/><path d="M20 12V28M12 20H28" stroke="white" stroke-width="2" stroke-linecap="round"/></svg>');
}
.z4f4c9icon-support {
    background-image: url('data:image/svg+xml;utf8,<svg width="40" height="40" viewBox="0 0 40 40" fill="none" xmlns="http://www.w3.org/2000/svg"><rect width="40" height="40" rx="20" fill="%23f59e42"/><circle cx="20" cy="20" r="8" stroke="white" stroke-width="2"/><path d="M20 16V20L22 22" stroke="white" stroke-width="2" stroke-linecap="round"/></svg>');
}
.z4f4c9icon-easy {
    background-image: url('data:image/svg+xml;utf8,<svg width="40" height="40" viewBox="0 0 40 40" fill="none" xmlns="http://www.w3.org/2000/svg"><rect width="40" height="40" rx="20" fill="%23fbbf24"/><path d="M16 20L20 24L24 20" stroke="white" stroke-width="2" stroke-linecap="round"/></svg>');
}

/* FAQ区 */
.z4f4c9faq-list {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
}
.z4f4c9faq-item {
    flex: 1 1 320px;
    max-width: 480px;
    background: #f1f5f9;
    border-radius: 1rem;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.04);
    padding: 1.2rem 1rem;
    margin-bottom: 1rem;
}

/* 页脚 */
.z4f4c9footer {
    background: #3b82f6;
    color: #fff;
    text-align: center;
    padding: 1.2rem 0;
    margin-top: 2rem;
    border-radius: 1.2rem 1.2rem 0 0;
    box-shadow: 0 -2px 8px rgba(59, 130, 246, 0.08);
}
.z4f4c9footer-content {
    max-width: 1200px;
    margin: 0 auto;
    font-size: 1rem;
}

/* 关于纸飞机 */
.z4f4c9about-section {
    background: linear-gradient(120deg, #f8fafc 0%, #e0e7ff 100%);
    margin-bottom: 2.5rem;
}
.z4f4c9about-content {
    font-size: 1.1rem;
    color: #374151;
    line-height: 1.8;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

/* 安装与开户流程 */
.z4f4c9install-section {
    background: #f1f5f9;
    margin-bottom: 2.5rem;
}
.z4f4c9install-steps {
    max-width: 700px;
    margin: 0 auto;
    padding-left: 1.2rem;
    color: #374151;
    font-size: 1.05rem;
    line-height: 2;
}
.z4f4c9install-steps li {
    margin-bottom: 0.5rem;
}

/* 使用场景 */
.z4f4c9scene-section {
    background: linear-gradient(120deg, #e0e7ff 0%, #f8fafc 100%);
    margin-bottom: 2.5rem;
}
.z4f4c9scene-list {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
}
.z4f4c9scene-item {
    flex: 1 1 200px;
    max-width: 260px;
    background: #fff;
    border-radius: 1rem;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.06);
    padding: 1.2rem 1rem;
    text-align: center;
    margin-bottom: 1rem;
    transition: transform 0.2s, box-shadow 0.2s;
}
.z4f4c9scene-item:hover {
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 6px 24px rgba(59, 130, 246, 0.10);
}

/* 用户评价 */
.z4f4c9review-section {
    background: #f1f5f9;
    margin-bottom: 2.5rem;
}
.z4f4c9review-list {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
}
.z4f4c9review-item {
    flex: 1 1 260px;
    max-width: 340px;
    background: #fff;
    border-radius: 1rem;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.06);
    padding: 1.2rem 1rem;
    text-align: left;
    margin-bottom: 1rem;
    position: relative;
}
.z4f4c9review-item p {
    font-size: 1.05rem;
    color: #374151;
    margin-bottom: 0.8rem;
}
.z4f4c9review-user {
    font-size: 0.95rem;
    color: #818cf8;
    font-style: italic;
    position: absolute;
    bottom: 1rem;
    right: 1.2rem;
}

/* 联系我们 */
.z4f4c9contact-section {
    background: linear-gradient(120deg, #e0e7ff 0%, #f8fafc 100%);
    margin-bottom: 2.5rem;
}
.z4f4c9contact-content {
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.05rem;
    color: #374151;
    line-height: 1.8;
    text-align: center;
}
.z4f4c9contact-content ul {
    list-style: disc inside;
    margin: 0.5rem 0 1rem 0;
    padding: 0;
    text-align: left;
    display: inline-block;
}

/* 响应式设计 */
@media (max-width: 900px) {
    .z4f4c9download-list,
    .z4f4c9advantage-list,
    .z4f4c9faq-list {
        flex-direction: column;
        gap: 1.2rem;
    }
    .z4f4c9main {
        padding: 1rem 0.5rem;
    }
    .z4f4c9section {
        padding: 1.2rem 0.5rem;
    }
    .z4f4c9scene-list,
    .z4f4c9review-list {
        flex-direction: column;
        gap: 1.2rem;
    }
}
@media (max-width: 600px) {
    .z4f4c9hero-title {
        font-size: 1.5rem;
    }
    .z4f4c9section-title {
        font-size: 1.2rem;
    }
    .z4f4c9btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.95rem;
    }
    .z4f4c9footer-content {
        font-size: 0.95rem;
    }
} 

/* 横幅左右布局 */
.z4f4c9hero-flex {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}
.z4f4c9hero-content {
    flex: 1 1 350px;
    min-width: 0;
    text-align: left;
}
.z4f4c9hero-img-wrap {
    flex: 0 0 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
}
.z4f4c9hero-img {
    max-width: 320px;
    width: 100%;
    height: auto;
    border-radius: 1.2rem;
    box-shadow: 0 4px 24px rgba(59,130,246,0.10);
    background: #fff;
}
@media (max-width: 900px) {
    .z4f4c9hero-flex {
        flex-direction: column;
        gap: 1.5rem;
        padding: 0;
    }
    .z4f4c9hero-content {
        text-align: center;
    }
    .z4f4c9hero-img-wrap {
        justify-content: center;
        width: 100%;
    }
    .z4f4c9hero-img {
        max-width: 220px;
    }
} 

/* 关于纸飞机左右布局 */
.z4f4c9about-flex {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}
.z4f4c9about-content {
    flex: 1 1 350px;
    min-width: 0;
    text-align: left;
}
.z4f4c9about-img-wrap {
    flex: 0 0 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
}
.z4f4c9about-img {
    max-width: 320px;
    width: 100%;
    height: auto;
    border-radius: 1.2rem;
    box-shadow: 0 4px 24px rgba(59,130,246,0.10);
    background: #fff;
}
@media (max-width: 900px) {
    .z4f4c9about-flex {
        flex-direction: column;
        gap: 1.2rem;
    }
    .z4f4c9about-content {
        text-align: center;
    }
    .z4f4c9about-img-wrap {
        justify-content: center;
        width: 100%;
    }
    .z4f4c9about-img {
        max-width: 220px;
    }
} 

/* 安装与开户流程左右布局 */
.z4f4c9install-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.2rem;
    width: 100%;
    max-width: none;
    margin: 0;
    position: relative;
}
.z4f4c9install-img-wrap {
    flex: 0 0 380px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    min-width: 0;
    height: 100%;
    margin-top: -56px;
}
.z4f4c9install-img {
    max-width: 380px;
    width: 100%;
    height: auto;
    border-radius: 1.2rem;
    box-shadow: 0 4px 24px rgba(59,130,246,0.10);
    background: #fff;
    display: block;
    margin-top: 0;
    margin-bottom: 0;
}
@media (max-width: 900px) {
    .z4f4c9install-flex {
        flex-direction: column;
        gap: 1.2rem;
    }
    .z4f4c9install-img-wrap {
        flex: none;
        width: 100%;
        height: auto;
        margin-top: -28px;
    }
    .z4f4c9install-img {
        max-width: 240px;
    }
    .z4f4c9install-steps {
        text-align: center;
        margin-left: 0;
        padding-right: 0;
    }
} 

/* FAQ安全卡片左右布局 */
.z4f4c9faq-safe-flex {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    width: 100%;
}
.z4f4c9faq-safe-img-wrap {
    flex: 0 0 120px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    min-width: 0;
}
.z4f4c9faq-safe-img {
    max-width: 120px;
    width: 100%;
    height: auto;
    border-radius: 1rem;
    box-shadow: 0 2px 8px rgba(59,130,246,0.10);
    background: #fff;
    display: block;
}
.z4f4c9faq-safe-content {
    flex: 1 1 0;
    min-width: 0;
    text-align: left;
}
@media (max-width: 700px) {
    .z4f4c9faq-safe-flex {
        flex-direction: column;
        gap: 0.8rem;
        align-items: flex-start;
    }
    .z4f4c9faq-safe-img-wrap {
        justify-content: center;
        width: 100%;
    }
    .z4f4c9faq-safe-img {
        max-width: 90px;
    }
    .z4f4c9faq-safe-content {
        text-align: center;
    }
} 

.z4f4c9faq-img-wrap {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}
.z4f4c9faq-img {
    max-width: 660px;
    width: 100%;
    height: auto;
    border-radius: 1rem;
    box-shadow: 0 2px 8px rgba(59,130,246,0.10);
    background: #fff;
    display: block;
}
@media (max-width: 700px) {
    .z4f4c9faq-img {
        max-width: 450px;
        height: auto;
    }
} 

.z4f4c9navbar-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 38px;
    height: 38px;
    background: none;
    border: none;
    cursor: pointer;
    margin-left: 1rem;
    z-index: 110;
}
.z4f4c9hamburger-bar {
    width: 26px;
    height: 4px;
    background: #fff;
    border-radius: 2px;
    margin: 3px 0;
    transition: all 0.3s;
    display: block;
}
@media (max-width: 700px) {
    .z4f4c9navbar-hamburger {
        display: inline-flex;
    }
    .z4f4c9navbar-menu {
        position: absolute;
        top: 56px;
        left: 0;
        right: 0;
        background: #3b82f6;
        box-shadow: 0 4px 16px rgba(59,130,246,0.10);
        flex-direction: column;
        align-items: stretch;
        z-index: 100;
        width: 100%;
        padding: 0.5rem 0 0.7rem 0;
        border-radius: 0 0 1rem 1rem;
    }
    .z4f4c9navbar-container {
        position: relative;
    }
} 

@media (max-width: 700px) {
    .z4f4c9section {
        padding: 0.8rem 0.2rem;
        margin-bottom: 1.2rem;
        border-radius: 0.7rem;
    }
    .z4f4c9download-item,
    .z4f4c9advantage-item,
    .z4f4c9scene-item,
    .z4f4c9review-item,
    .z4f4c9faq-item {
        max-width: 96vw !important;
        min-width: 0;
        margin: 0 auto 0.8rem auto;
        border-radius: 0.7rem;
        padding: 0.8rem 0.5rem;
        min-height: 120px;
    }
    .z4f4c9about-img,
    .z4f4c9install-img,
    .z4f4c9faq-safe-img,
    .z4f4c9faq-img {
        max-width: 90vw;
        margin-left: auto;
        margin-right: auto;
        display: block;
    }
    .z4f4c9about-flex,
    .z4f4c9install-flex,
    .z4f4c9faq-safe-flex {
        flex-direction: column !important;
        align-items: center !important;
        gap: 0.8rem;
    }
    .z4f4c9about-content,
    .z4f4c9install-steps,
    .z4f4c9faq-safe-content {
        text-align: center;
        width: 100%;
        padding: 0;
    }
    .z4f4c9faq-img-wrap {
        margin-top: 1rem;
        margin-bottom: 0.5rem;
    }
} 

/* 统一卡片样式 */
.z4f4c9download-item,
.z4f4c9advantage-item,
.z4f4c9scene-item,
.z4f4c9review-item,
.z4f4c9faq-item {
    background: #fff;
    border-radius: 0.9rem;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.06);
    padding: 1.2rem 1rem;
    text-align: center;
    margin-bottom: 1.2rem;
    min-height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    box-sizing: border-box;
}
.z4f4c9download-item { max-width: 320px; }
.z4f4c9advantage-item { max-width: 260px; }
.z4f4c9scene-item { max-width: 260px; }
.z4f4c9review-item { max-width: 340px; }
.z4f4c9faq-item { max-width: 480px; }

/* 卡片容器间距统一 */
.z4f4c9download-list,
.z4f4c9advantage-list,
.z4f4c9scene-list,
.z4f4c9review-list,
.z4f4c9faq-list {
    gap: 2rem;
}

@media (max-width: 900px) {
    .z4f4c9download-list,
    .z4f4c9advantage-list,
    .z4f4c9scene-list,
    .z4f4c9review-list,
    .z4f4c9faq-list {
        gap: 1.2rem;
    }
}
@media (max-width: 700px) {
    .z4f4c9download-item,
    .z4f4c9advantage-item,
    .z4f4c9scene-item,
    .z4f4c9review-item,
    .z4f4c9faq-item {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0;
        min-height: 120px;
        margin: 0 0 0.8rem 0;
        border-radius: 0.7rem;
        padding: 0.8rem 0.5rem;
        box-sizing: border-box;
    }
    .z4f4c9download-list,
    .z4f4c9advantage-list,
    .z4f4c9scene-list,
    .z4f4c9review-list,
    .z4f4c9faq-list {
        gap: 0.8rem;
        align-items: stretch;
        padding: 0;
    }
} 

/* 统一所有卡片宽高和布局 */
.z4f4c9download-item,
.z4f4c9advantage-item,
.z4f4c9scene-item,
.z4f4c9review-item,
.z4f4c9faq-item {
    max-width: 320px !important;
    min-width: 0;
    min-height: 220px;
    background: #fff;
    border-radius: 0.9rem;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.06);
    padding: 1.2rem 1rem;
    margin-bottom: 1.2rem;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: space-between;
    box-sizing: border-box;
}
.z4f4c9download-list,
.z4f4c9advantage-list,
.z4f4c9scene-list,
.z4f4c9review-list,
.z4f4c9faq-list {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    align-items: stretch;
    justify-content: center;
}
.z4f4c9card-content {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}
@media (max-width: 700px) {
    .z4f4c9download-item,
    .z4f4c9advantage-item,
    .z4f4c9scene-item,
    .z4f4c9review-item,
    .z4f4c9faq-item {
        max-width: 96vw !important;
        min-width: 0;
        min-height: 120px;
        margin: 0 auto 0.8rem auto;
        border-radius: 0.7rem;
        padding: 0.8rem 0.5rem;
    }
    .z4f4c9download-list,
    .z4f4c9advantage-list,
    .z4f4c9scene-list,
    .z4f4c9review-list,
    .z4f4c9faq-list {
        gap: 0.8rem;
        align-items: stretch;
    }
} 

@media (max-width: 900px) {
    .z4f4c9hero-img {
        max-width: 95vw;
        width: 100%;
        height: auto;
    }
}